"""
有两个数字
n1=15.1 年增长率为5.5%
n2=10.2 年增长率为7.8%
何时n2超过n1？
"""
def main():
  '''  k=1
    n1 = 15.1
    n2 = 10.2
    while (n2<=n1):
        n1 = n1 * (1 + 0.055)
        n2 = n2 * (1 + 0.078)
        k=k+1
    print(k-1)'''

if __name__=='__main__':
    main()